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Found 10 records similar to Acid Sensitive Lakes, Oil Sands Region
Assessing polycyclic aromatic hydrocarbon and naphthenic acid concentrations in soils collected in 2012 – Field and Laboratory Assessment of Contaminants
The concentrations of polycyclic aromatic hydrocarbons (PAHs) and naphthenic acids (NAs) were measured in soil samples collected in 2012. Concentrations at all sites were, with one exception, always below soil quality guidelines established by the Canadian Council of Ministers of the Environment (CCME). PAH concentrations in soil at sites near oil sands industrial development were higher than PAH concentrations in northwestern Saskatchewan. This finding was not unexpected given that PAHs are present in naturally occurring Alberta bitumen.
In Waterton Lakes National Park, grizzly bears are used as an umbrella species representing wildlife that are sensitive to human disturbance, whereas the status of secure habitat is used as a surrogate measure for assessing cumulative effects. The status of grizzly bear habitat is therefore considered to be a landscape level indicator of the ecological integrity in Waterton Lakes National Park and the significantly larger regional ecosystem upon which this wide ranging species depends. The Sensitive Species Secure Habitat measureassesses the percent of available grizzly bear habitat in Waterton Lakes National Park; this assessment is based on digital elevation models, remote sensing data, and human activity trail counters.
The purpose of this Cyclical Enforcement (CE) project was to verify industry's compliance with the boric acid and salts of boric acid requirements of the Toys Regulations.
This Guideline Technical Document reviews the health risks associated with haloacetic acids in drinking water. It assesses all identified health risks, taking into account new studies and approaches, as well as treatment considerations. Exposure to haloacetic acids from drinking water through inhalation and skin contact has been considered for inclusion, but is not deemed significant. Based on this review, the guideline for total haloacetic acids in drinking water is established at a maximum acceptable concentration of 0.08 mg/L.
The maximum acceptable concentration (MAC) for nitrilotriacetic acid (NTA) in drinking water is 0.4 mg/L (400 µg/L).
Nucleic acid-based testing is also called molecular testing, and is often called PCR. Molecular tests detect the virus genetic material (nucleic acids). Public health laboratories in Canada and around the world use nucleic acid-based testing to diagnose COVID-19 infection. This test is the gold standard to diagnose active COVID-19 infection in patients with symptoms.
These substances were identified for action under the Chemicals Management Plan (CMP). This screening assessment focuses on 6 of 7 substances referred to collectively as the Naphthalene Sulfonic Acids and Salts (NSAs) Group.
A drinking water screening value of 20 ng/L (0.000020 mg/L) is established for perfluorononanoic acid (PFNA)
This List of Permitted pH Adjusting Agents, Acid-Reacting Materials and Water Correcting Agents sets out authorized food additives that are used to alter or control the acidity or alkalinity of a food or to prevent a food from drying out.
Health Canada has notified Monsanto Canada Inc. that it has no objection to the food use of Stearidonic Acid (SDA) Producing Soybean MON 87769. The Department conducted a comprehensive assessment of these varieties according to its Guidelines for the Safety Assessment of Novel Foods.